The important thing to remember is Iran is the aggressor nation. Iran's leaders have threatened Israel many times, including threatening its very existence. This takes a severe psychological toll (conscious and sub-conscious) on Israelis and so, in effect, a state of conflict already exists. Iran also supplies weapons to terror groups which often daily attack Israel. Not enough is being made of the Iranian regime's guilt. Guilt for causing this conflict, for supplying weapons to terror groups that harm Israelis, for terrorizing mass populations.
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from the article: Iran Defense Minister: Israeli strike would be a suicide mission